Hibernate：是什么导致我的应用程序出现“类名未映射”错误？
Hibernate: What is causing this `classname not mapped` error in my app?
我正在使用 AWS Lambda 开发 REST API。我也在使用 MySQL 和 Hibernate。我已经安装了 Docker，暂时尝试在本地 运行 应用程序。 MySQL 通过 WAMP 和 运行ning 在本地主机中安装。
下面是我的结构
下面是我的代码。
GetAllAccountTypesLambda
public class GetAllAccountTypesLambda {
private final SessionFactoryBuilder sessionFactoryBuilder = SessionFactoryBuilder.getInstance();
ObjectMapper objectMapper = new ObjectMapper();
// private static DAOConnectionInterface daoci;
public APIGatewayProxyResponseEvent getAllAccountTypes(APIGatewayProxyResponseEvent request) throws JsonProcessingException
{
Session session = getSession();
Transaction transaction = null;
List<AccountingType> list = new ArrayList<>();;
try{
transaction = getTransaction(session);
Query query = session.createQuery("from AccountingType");
list = (List<AccountingType>) query.list();
transaction.commit();
}catch(Exception ex){
ex.printStackTrace();
}finally{
session.close();
}
String writeValueAsString = objectMapper.writeValueAsString(list);
return new APIGatewayProxyResponseEvent().withStatusCode(200).withBody(writeValueAsString);
}
private Session getSession() {
return sessionFactoryBuilder.getSessionFactory().openSession();
}
private Transaction getTransaction(Session session) {
Transaction transaction = session.beginTransaction();
return transaction;
}
}
SessionFactoryBuilder
public class SessionFactoryBuilder
{
private static SessionFactoryBuilder instance;
private static SessionFactory sessionFactory;
private SessionFactoryBuilder()
{
buildConfig();
System.out.println("Welcome");
}
private static void buildConfig()
{
Configuration configuration = new Configuration().configure();
StandardServiceRegistryBuilder builder = new StandardServiceRegistryBuilder()
.applySettings(configuration.getProperties());
sessionFactory = configuration.buildSessionFactory(builder.build());
}
public static SessionFactoryBuilder getInstance()
{
if(instance == null)
{
instance = new SessionFactoryBuilder();
}
return instance;
}
public SessionFactory getSessionFactory()
{
return sessionFactory;
}
}
会计类型
public class AccountingType implements java.io.Serializable {
private Integer idaccountingType;
private String type;
public AccountingType() {
}
public AccountingType(String type) {
this.type = type;
}
public Integer getIdaccountingType() {
return this.idaccountingType;
}
public void setIdaccountingType(Integer idaccountingType) {
this.idaccountingType = idaccountingType;
}
public String getType() {
return this.type;
}
public void setType(String type) {
this.type = type;
}
}
AccountingType.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Jul 12, 2021, 4:27:10 PM by Hibernate Tools 4.3.1 -->
<hibernate-mapping>
<class name="com.abcdapp.beans.AccountingType" table="accounting_type" catalog="abcd" optimistic-lock="version">
<id name="idaccountingType" type="java.lang.Integer">
<column name="idaccounting_type" />
<generator class="identity" />
</id>
<property name="type" type="string">
<column name="type" length="45" not-null="true" />
</property>
</class>
</hibernate-mapping>
下面是配置文件
template.yaml
AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
abcd-restapi
Sample SAM Template for abcd-restapi
# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
Function:
Timeout: 100
Resources:
GetAllAccountTypesLambda:
Type: AWS::Serverless::Function # More info about Function Resource: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
Properties:
CodeUri: abcd-restapi
Handler: com.abcdapp.dao.accountingtype.GetAllAccountTypesLambda::getAllAccountTypes
Runtime: java11
MemorySize: 512
Environment: # More info about Env Vars: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#environment-object
Variables:
PARAM1: VALUE
Events:
HelloWorld:
Type: Api # More info about API Event Source: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#api
Properties:
Path: /accounttype
Method: get
hibernate.cfg.xml
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://host.docker.internal:3306/abcd</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.c3p0.min_size">5</property>
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.timeout">3000</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.c3p0.idle_test_period">300</property>
<property name="hibernate.c3p0.testConnectionOnCheckout">true</property>
<property name="hibernate.c3p0.preferredTestQuery">SELECT 1</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="show_sql">true</property>
<mapping resource="com/abcdapp/beans/AccountingType.hbm.xml"/>
</session-factory>
</hibernate-configuration>
hibernate.reveng.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-reverse-engineering PUBLIC "-//Hibernate/Hibernate Reverse Engineering DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-reverse-engineering-3.0.dtd">
<hibernate-reverse-engineering>
<schema-selection match-catalog="abcd"/>
<table-filter match-name="accounting_type"/>
</hibernate-reverse-engineering>
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.abcd</groupId>
<artifactId>abcd-restapi</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>abcd REST API</name>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-core</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-events</artifactId>
<version>3.6.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.12.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.12.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-entitymanager -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.5.3.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate.javax.persistence/hibernate-jpa-2.1-api -->
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
<version>1.0.2.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-c3p0 -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-c3p0</artifactId>
<version>5.5.3.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.5</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.4</version>
<configuration>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
我使用命令 sam build 成功构建了项目。然后我使用命令sam local invoke。现在我有以下错误。我发布了完整的堆栈跟踪，以备不时之需。
START RequestId: c7c68040-0e20-4eca-8689-bd3db309b3cd Version: $LATEST
Jul 13, 2021 7:45:58 AM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate ORM core version 5.5.3.Final
Jul 13, 2021 7:45:59 AM org.hibernate.boot.jaxb.internal.stax.LocalXmlResourceResolver resolveEntity
WARN: HHH90000012: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/hibernate-configuration. Use namespace http://www.hibernate.org/dtd/hibernate-configuration instead. Support for obsolete DTD/XSD namespaces may be removed at any time.
Jul 13, 2021 7:46:00 AM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
Jul 13, 2021 7:46:01 AM org.hibernate.c3p0.internal.C3P0ConnectionProvider configure
INFO: HHH010002: C3P0 using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://host.docker.internal:3306/abcd
Jul 13, 2021 7:46:01 AM org.hibernate.c3p0.internal.C3P0ConnectionProvider configure
INFO: HHH10001001: Connection properties: {user=root}
Jul 13, 2021 7:46:01 AM org.hibernate.c3p0.internal.C3P0ConnectionProvider configure
INFO: HHH10001003: Autocommit mode: false
Jul 13, 2021 7:46:01 AM com.mchange.v2.log.MLog
INFO: MLog clients using java 1.4+ standard logging.
Jul 13, 2021 7:46:02 AM com.mchange.v2.c3p0.C3P0Registry
INFO: Initializing c3p0-0.9.5.5 [built 11-December-2019 22:18:33 -0800; debug? true; trace: 10]
Jul 13, 2021 7:46:02 AM org.hibernate.c3p0.internal.C3P0ConnectionProvider configure
INFO: HHH10001007: JDBC isolation level: <unknown>
Jul 13, 2021 7:46:02 AM com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource
INFO: Initializing c3p0 pool... com.mchange.v2.c3p0.PoolBackedDataSource@c0ca178d [ connectionPoolDataSource -> com.mchange.v2.c3p0.WrapperConnectionPoolDataSource@c81adb7d [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, contextClassLoaderSource -> caller, debugUnreturnedConnectionStackTraces -> false, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, forceSynchronousCheckins -> false, identityToken -> 1bqq1heai182ia6xa86s64|ec0c838, idleConnectionTestPeriod -> 300, initialPoolSize -> 5, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 3000, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 20, maxStatements -> 50, maxStatementsPerConnection -> 0, minPoolSize -> 5, nestedDataSource -> com.mchange.v2.c3p0.DriverManagerDataSource@95bff986 [ description -> null, driverClass -> null, factoryClassLocation -> null, forceUseNamedDriverClass -> false, identityToken -> 1bqq1heai182ia6xa86s64|53812a9b, jdbcUrl -> jdbc:mysql://host.docker.internal:3306/abcd, properties -> {user=******} ], preferredTestQuery -> SELECT 1, privilegeSpawnedThreads -> false, propertyCycle -> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> true, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false; userOverrides: {} ], dataSourceName -> null, extensions -> {}, factoryClassLocation -> null, identityToken -> 1bqq1heai182ia6xa86s64|6de54b40, numHelperThreads -> 3 ]
Jul 13, 2021 7:46:03 AM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
Welcome
java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: AccountingType is not mapped [from AccountingType]
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:138)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:743)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:114)
at com.abcdapp.dao.accountingtype.GetAllAccountTypesLambda.getAllAccountTypes(GetAllAccountTypesLambda.java:38)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at lambdainternal.EventHandlerLoader$PojoMethodRequestHandler.handleRequest(EventHandlerLoader.java:282)
at lambdainternal.EventHandlerLoader$PojoHandlerAsStreamHandler.handleRequest(EventHandlerLoader.java:199)
at lambdainternal.EventHandlerLoader.call(EventHandlerLoader.java:899)
at lambdainternal.AWSLambda.startRuntime(AWSLambda.java:257)
at lambdainternal.AWSLambda.startRuntime(AWSLambda.java:192)
at lambdainternal.AWSLambda.main(AWSLambda.java:187)
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: AccountingType is not mapped [from AccountingType]
at org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException(QuerySyntaxException.java:79)
at org.hibernate.QueryException.wrapWithQueryString(QueryException.java:103)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:220)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:144)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:113)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:73)
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:162)
at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:622)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:734)
... 12 more
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: AccountingType is not mapped
at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:169)
at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:91)
at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:77)
at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:333)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3765)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3654)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:737)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:593)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:330)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:278)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:276)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:192)
... 18 more
END RequestId: c7c68040-0e20-4eca-8689-bd3db309b3cd
REPORT RequestId: c7c68040-0e20-4eca-8689-bd3db309b3cd Init Duration: 1.44 ms Duration: 10188.35 ms Billed Duration: 10200 ms Memory Size: 512 MB Max Memory Used: 512 MB
{"statusCode":200,"body":"[]"}
导致此错误的原因是什么？
我认为您创建的会话工厂过于复杂，并且未加载映射文件。
以下两种方法都应该有效。
方法一：
private static void buildConfig() {
sessionFactory = new Configuration().configure().buildSessionFactory();
}
方法二：
private static void buildConfig() {
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().configure().build();
// Create MetadataSources
MetadataSources sources = new MetadataSources(serviceRegistry);
// Create Metadata
Metadata metadata = sources.getMetadataBuilder().build();
// Create SessionFactory
sessionFactory = metadata.getSessionFactoryBuilder().build();
}
我正在使用 AWS Lambda 开发 REST API。我也在使用 MySQL 和 Hibernate。我已经安装了 Docker，暂时尝试在本地 运行 应用程序。 MySQL 通过 WAMP 和 运行ning 在本地主机中安装。
下面是我的结构
下面是我的代码。
GetAllAccountTypesLambda
public class GetAllAccountTypesLambda {
private final SessionFactoryBuilder sessionFactoryBuilder = SessionFactoryBuilder.getInstance();
ObjectMapper objectMapper = new ObjectMapper();
// private static DAOConnectionInterface daoci;
public APIGatewayProxyResponseEvent getAllAccountTypes(APIGatewayProxyResponseEvent request) throws JsonProcessingException
{
Session session = getSession();
Transaction transaction = null;
List<AccountingType> list = new ArrayList<>();;
try{
transaction = getTransaction(session);
Query query = session.createQuery("from AccountingType");
list = (List<AccountingType>) query.list();
transaction.commit();
}catch(Exception ex){
ex.printStackTrace();
}finally{
session.close();
}
String writeValueAsString = objectMapper.writeValueAsString(list);
return new APIGatewayProxyResponseEvent().withStatusCode(200).withBody(writeValueAsString);
}
private Session getSession() {
return sessionFactoryBuilder.getSessionFactory().openSession();
}
private Transaction getTransaction(Session session) {
Transaction transaction = session.beginTransaction();
return transaction;
}
}
SessionFactoryBuilder
public class SessionFactoryBuilder
{
private static SessionFactoryBuilder instance;
private static SessionFactory sessionFactory;
private SessionFactoryBuilder()
{
buildConfig();
System.out.println("Welcome");
}
private static void buildConfig()
{
Configuration configuration = new Configuration().configure();
StandardServiceRegistryBuilder builder = new StandardServiceRegistryBuilder()
.applySettings(configuration.getProperties());
sessionFactory = configuration.buildSessionFactory(builder.build());
}
public static SessionFactoryBuilder getInstance()
{
if(instance == null)
{
instance = new SessionFactoryBuilder();
}
return instance;
}
public SessionFactory getSessionFactory()
{
return sessionFactory;
}
}
会计类型
public class AccountingType implements java.io.Serializable {
private Integer idaccountingType;
private String type;
public AccountingType() {
}
public AccountingType(String type) {
this.type = type;
}
public Integer getIdaccountingType() {
return this.idaccountingType;
}
public void setIdaccountingType(Integer idaccountingType) {
this.idaccountingType = idaccountingType;
}
public String getType() {
return this.type;
}
public void setType(String type) {
this.type = type;
}
}
AccountingType.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<!-- Generated Jul 12, 2021, 4:27:10 PM by Hibernate Tools 4.3.1 -->
<hibernate-mapping>
<class name="com.abcdapp.beans.AccountingType" table="accounting_type" catalog="abcd" optimistic-lock="version">
<id name="idaccountingType" type="java.lang.Integer">
<column name="idaccounting_type" />
<generator class="identity" />
</id>
<property name="type" type="string">
<column name="type" length="45" not-null="true" />
</property>
</class>
</hibernate-mapping>
下面是配置文件
template.yaml
AWSTemplateFormatVersion: '2010-09-09'
Transform: AWS::Serverless-2016-10-31
Description: >
abcd-restapi
Sample SAM Template for abcd-restapi
# More info about Globals: https://github.com/awslabs/serverless-application-model/blob/master/docs/globals.rst
Globals:
Function:
Timeout: 100
Resources:
GetAllAccountTypesLambda:
Type: AWS::Serverless::Function # More info about Function Resource: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#awsserverlessfunction
Properties:
CodeUri: abcd-restapi
Handler: com.abcdapp.dao.accountingtype.GetAllAccountTypesLambda::getAllAccountTypes
Runtime: java11
MemorySize: 512
Environment: # More info about Env Vars: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#environment-object
Variables:
PARAM1: VALUE
Events:
HelloWorld:
Type: Api # More info about API Event Source: https://github.com/awslabs/serverless-application-model/blob/master/versions/2016-10-31.md#api
Properties:
Path: /accounttype
Method: get
hibernate.cfg.xml
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.url">jdbc:mysql://host.docker.internal:3306/abcd</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.c3p0.min_size">5</property>
<property name="hibernate.c3p0.max_size">20</property>
<property name="hibernate.c3p0.timeout">3000</property>
<property name="hibernate.c3p0.max_statements">50</property>
<property name="hibernate.c3p0.idle_test_period">300</property>
<property name="hibernate.c3p0.testConnectionOnCheckout">true</property>
<property name="hibernate.c3p0.preferredTestQuery">SELECT 1</property>
<property name="hibernate.current_session_context_class">thread</property>
<property name="show_sql">true</property>
<mapping resource="com/abcdapp/beans/AccountingType.hbm.xml"/>
</session-factory>
</hibernate-configuration>
hibernate.reveng.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-reverse-engineering PUBLIC "-//Hibernate/Hibernate Reverse Engineering DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-reverse-engineering-3.0.dtd">
<hibernate-reverse-engineering>
<schema-selection match-catalog="abcd"/>
<table-filter match-name="accounting_type"/>
</hibernate-reverse-engineering>
pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.abcd</groupId>
<artifactId>abcd-restapi</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<name>abcd REST API</name>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-core</artifactId>
<version>1.2.1</version>
</dependency>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-events</artifactId>
<version>3.6.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.12.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.12.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-entitymanager -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.5.3.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate.javax.persistence/hibernate-jpa-2.1-api -->
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
<version>1.0.2.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-c3p0 -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-c3p0</artifactId>
<version>5.5.3.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.5</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.2.4</version>
<configuration>
</configuration>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
我使用命令 sam build 成功构建了项目。然后我使用命令sam local invoke。现在我有以下错误。我发布了完整的堆栈跟踪，以备不时之需。
START RequestId: c7c68040-0e20-4eca-8689-bd3db309b3cd Version: $LATEST
Jul 13, 2021 7:45:58 AM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate ORM core version 5.5.3.Final
Jul 13, 2021 7:45:59 AM org.hibernate.boot.jaxb.internal.stax.LocalXmlResourceResolver resolveEntity
WARN: HHH90000012: Recognized obsolete hibernate namespace http://hibernate.sourceforge.net/hibernate-configuration. Use namespace http://www.hibernate.org/dtd/hibernate-configuration instead. Support for obsolete DTD/XSD namespaces may be removed at any time.
Jul 13, 2021 7:46:00 AM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.1.2.Final}
Jul 13, 2021 7:46:01 AM org.hibernate.c3p0.internal.C3P0ConnectionProvider configure
INFO: HHH010002: C3P0 using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://host.docker.internal:3306/abcd
Jul 13, 2021 7:46:01 AM org.hibernate.c3p0.internal.C3P0ConnectionProvider configure
INFO: HHH10001001: Connection properties: {user=root}
Jul 13, 2021 7:46:01 AM org.hibernate.c3p0.internal.C3P0ConnectionProvider configure
INFO: HHH10001003: Autocommit mode: false
Jul 13, 2021 7:46:01 AM com.mchange.v2.log.MLog
INFO: MLog clients using java 1.4+ standard logging.
Jul 13, 2021 7:46:02 AM com.mchange.v2.c3p0.C3P0Registry
INFO: Initializing c3p0-0.9.5.5 [built 11-December-2019 22:18:33 -0800; debug? true; trace: 10]
Jul 13, 2021 7:46:02 AM org.hibernate.c3p0.internal.C3P0ConnectionProvider configure
INFO: HHH10001007: JDBC isolation level: <unknown>
Jul 13, 2021 7:46:02 AM com.mchange.v2.c3p0.impl.AbstractPoolBackedDataSource
INFO: Initializing c3p0 pool... com.mchange.v2.c3p0.PoolBackedDataSource@c0ca178d [ connectionPoolDataSource -> com.mchange.v2.c3p0.WrapperConnectionPoolDataSource@c81adb7d [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, contextClassLoaderSource -> caller, debugUnreturnedConnectionStackTraces -> false, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, forceSynchronousCheckins -> false, identityToken -> 1bqq1heai182ia6xa86s64|ec0c838, idleConnectionTestPeriod -> 300, initialPoolSize -> 5, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 3000, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 20, maxStatements -> 50, maxStatementsPerConnection -> 0, minPoolSize -> 5, nestedDataSource -> com.mchange.v2.c3p0.DriverManagerDataSource@95bff986 [ description -> null, driverClass -> null, factoryClassLocation -> null, forceUseNamedDriverClass -> false, identityToken -> 1bqq1heai182ia6xa86s64|53812a9b, jdbcUrl -> jdbc:mysql://host.docker.internal:3306/abcd, properties -> {user=******} ], preferredTestQuery -> SELECT 1, privilegeSpawnedThreads -> false, propertyCycle -> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> true, unreturnedConnectionTimeout -> 0, usesTraditionalReflectiveProxies -> false; userOverrides: {} ], dataSourceName -> null, extensions -> {}, factoryClassLocation -> null, identityToken -> 1bqq1heai182ia6xa86s64|6de54b40, numHelperThreads -> 3 ]
Jul 13, 2021 7:46:03 AM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.MySQLDialect
Welcome
java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: AccountingType is not mapped [from AccountingType]
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:138)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:188)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:743)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:114)
at com.abcdapp.dao.accountingtype.GetAllAccountTypesLambda.getAllAccountTypes(GetAllAccountTypesLambda.java:38)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.base/java.lang.reflect.Method.invoke(Unknown Source)
at lambdainternal.EventHandlerLoader$PojoMethodRequestHandler.handleRequest(EventHandlerLoader.java:282)
at lambdainternal.EventHandlerLoader$PojoHandlerAsStreamHandler.handleRequest(EventHandlerLoader.java:199)
at lambdainternal.EventHandlerLoader.call(EventHandlerLoader.java:899)
at lambdainternal.AWSLambda.startRuntime(AWSLambda.java:257)
at lambdainternal.AWSLambda.startRuntime(AWSLambda.java:192)
at lambdainternal.AWSLambda.main(AWSLambda.java:187)
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: AccountingType is not mapped [from AccountingType]
at org.hibernate.hql.internal.ast.QuerySyntaxException.generateQueryException(QuerySyntaxException.java:79)
at org.hibernate.QueryException.wrapWithQueryString(QueryException.java:103)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:220)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:144)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:113)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:73)
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:162)
at org.hibernate.internal.AbstractSharedSessionContract.getQueryPlan(AbstractSharedSessionContract.java:622)
at org.hibernate.internal.AbstractSharedSessionContract.createQuery(AbstractSharedSessionContract.java:734)
... 12 more
Caused by: org.hibernate.hql.internal.ast.QuerySyntaxException: AccountingType is not mapped
at org.hibernate.hql.internal.ast.util.SessionFactoryHelper.requireClassPersister(SessionFactoryHelper.java:169)
at org.hibernate.hql.internal.ast.tree.FromElementFactory.addFromElement(FromElementFactory.java:91)
at org.hibernate.hql.internal.ast.tree.FromClause.addFromElement(FromClause.java:77)
at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromElement(HqlSqlWalker.java:333)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3765)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3654)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:737)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:593)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:330)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:278)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:276)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:192)
... 18 more
END RequestId: c7c68040-0e20-4eca-8689-bd3db309b3cd
REPORT RequestId: c7c68040-0e20-4eca-8689-bd3db309b3cd Init Duration: 1.44 ms Duration: 10188.35 ms Billed Duration: 10200 ms Memory Size: 512 MB Max Memory Used: 512 MB
{"statusCode":200,"body":"[]"}
导致此错误的原因是什么？
我认为您创建的会话工厂过于复杂，并且未加载映射文件。
以下两种方法都应该有效。
方法一：
private static void buildConfig() {
sessionFactory = new Configuration().configure().buildSessionFactory();
}
方法二：
private static void buildConfig() {
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().configure().build();
// Create MetadataSources
MetadataSources sources = new MetadataSources(serviceRegistry);
// Create Metadata
Metadata metadata = sources.getMetadataBuilder().build();
// Create SessionFactory
sessionFactory = metadata.getSessionFactoryBuilder().build();
}